[PATCH v2 07/15] soc: mediatek: mutex: refactor SOF settings for output components

[paul-pl.chen <paul-pl.chen@mediatek.com>]

From: Nancy Lin <nancy.lin@mediatek.com>

Refactor SOF settings by adding mtk_mutex_get_output_comp_sof()
and extracting SOF logic from mtk_mutex_add_comp()
and mtk_mutex_remove_comp().

- Added mtk_mutex_add_comp_sof() and mtk_mutex_remove_comp_sof()
  for SOF settings.
- Reused the switch case for SOF IDs.
- Separated MOD and SOF logic.

Signed-off-by: Nancy Lin <nancy.lin@mediatek.com>
Signed-off-by: Paul-pl Chen <paul-pl.chen@mediatek.com>
---
 drivers/soc/mediatek/mtk-mutex.c       | 121 +++++++++++++++----------
 include/linux/soc/mediatek/mtk-mutex.h |   4 +
 2 files changed, 79 insertions(+), 46 deletions(-)

diff --git a/drivers/soc/mediatek/mtk-mutex.c b/drivers/soc/mediatek/mtk-mutex.c
index aaa965d4b050..c026ac0e6969 100644
--- a/drivers/soc/mediatek/mtk-mutex.c
+++ b/drivers/soc/mediatek/mtk-mutex.c
@@ -853,43 +853,84 @@ void mtk_mutex_unprepare(struct mtk_mutex *mutex)
 }
 EXPORT_SYMBOL_GPL(mtk_mutex_unprepare);
 
-void mtk_mutex_add_comp(struct mtk_mutex *mutex,
-			enum mtk_ddp_comp_id id)
+static int mtk_mutex_get_output_comp_sof(enum mtk_ddp_comp_id id)
 {
-	struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
-						 mutex[mutex->id]);
-	unsigned int reg;
-	unsigned int sof_id;
-	unsigned int offset;
-
-	WARN_ON(&mtx->mutex[mutex->id] != mutex);
-
 	switch (id) {
 	case DDP_COMPONENT_DSI0:
-		sof_id = MUTEX_SOF_DSI0;
-		break;
+		return MUTEX_SOF_DSI0;
 	case DDP_COMPONENT_DSI1:
-		sof_id = MUTEX_SOF_DSI0;
-		break;
+		return MUTEX_SOF_DSI1;
 	case DDP_COMPONENT_DSI2:
-		sof_id = MUTEX_SOF_DSI2;
-		break;
+		return MUTEX_SOF_DSI2;
 	case DDP_COMPONENT_DSI3:
-		sof_id = MUTEX_SOF_DSI3;
-		break;
+		return MUTEX_SOF_DSI3;
 	case DDP_COMPONENT_DPI0:
-		sof_id = MUTEX_SOF_DPI0;
-		break;
+		return MUTEX_SOF_DPI0;
 	case DDP_COMPONENT_DPI1:
-		sof_id = MUTEX_SOF_DPI1;
-		break;
+		return MUTEX_SOF_DPI1;
 	case DDP_COMPONENT_DP_INTF0:
-		sof_id = MUTEX_SOF_DP_INTF0;
-		break;
+		return MUTEX_SOF_DP_INTF0;
 	case DDP_COMPONENT_DP_INTF1:
-		sof_id = MUTEX_SOF_DP_INTF1;
-		break;
+		return MUTEX_SOF_DP_INTF1;
 	default:
+		break;
+	}
+
+	return -EINVAL;
+}
+
+void mtk_mutex_add_comp_sof(struct mtk_mutex *mutex, enum mtk_ddp_comp_id id)
+{
+	struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
+						 mutex[mutex->id]);
+	int sof_id = mtk_mutex_get_output_comp_sof(id);
+	unsigned int offset;
+
+	if (sof_id < 0 || sof_id >= DDP_MUTEX_SOF_MAX)
+		return;
+
+	WARN_ON(&mtx->mutex[mutex->id] != mutex);
+
+	offset = DISP_REG_MUTEX_SOF(mtx->data->mutex_sof_reg, mutex->id);
+
+	writel_relaxed(mtx->data->mutex_sof[sof_id],
+		       mtx->regs + offset);
+}
+EXPORT_SYMBOL_GPL(mtk_mutex_add_comp_sof);
+
+void mtk_mutex_remove_comp_sof(struct mtk_mutex *mutex, enum mtk_ddp_comp_id id)
+{
+	struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
+						 mutex[mutex->id]);
+	unsigned int reg;
+	int sof_id = mtk_mutex_get_output_comp_sof(id);
+	unsigned int offset;
+
+	if (sof_id < 0 || sof_id >= DDP_MUTEX_SOF_MAX)
+		return;
+
+	WARN_ON(&mtx->mutex[mutex->id] != mutex);
+
+	offset = DISP_REG_MUTEX_SOF(mtx->data->mutex_sof_reg, mutex->id);
+	reg = readl_relaxed(mtx->regs + offset);
+	reg &= ~(1 << mtx->data->mutex_sof[id]);
+
+	writel_relaxed(reg, mtx->regs + offset);
+}
+EXPORT_SYMBOL_GPL(mtk_mutex_remove_comp_sof);
+
+void mtk_mutex_add_comp(struct mtk_mutex *mutex,
+			enum mtk_ddp_comp_id id)
+{
+	struct mtk_mutex_ctx *mtx = container_of(mutex, struct mtk_mutex_ctx,
+						 mutex[mutex->id]);
+	unsigned int reg;
+	unsigned int offset;
+	bool is_output_comp = !!mtk_mutex_get_output_comp_sof(id);
+
+	WARN_ON(&mtx->mutex[mutex->id] != mutex);
+
+	if (!is_output_comp) {
 		if (mtx->data->mutex_mod[id] < 32) {
 			offset = DISP_REG_MUTEX_MOD(mtx->data->mutex_mod_reg,
 						    mutex->id);
@@ -902,12 +943,10 @@ void mtk_mutex_add_comp(struct mtk_mutex *mutex,
 			reg |= 1 << (mtx->data->mutex_mod[id] - 32);
 			writel_relaxed(reg, mtx->regs + offset);
 		}
-		return;
 	}
 
-	writel_relaxed(mtx->data->mutex_sof[sof_id],
-		       mtx->regs +
-		       DISP_REG_MUTEX_SOF(mtx->data->mutex_sof_reg, mutex->id));
+	if (is_output_comp)
+		mtk_mutex_add_comp_sof(mutex, id);
 }
 EXPORT_SYMBOL_GPL(mtk_mutex_add_comp);
 
@@ -918,24 +957,11 @@ void mtk_mutex_remove_comp(struct mtk_mutex *mutex,
 						 mutex[mutex->id]);
 	unsigned int reg;
 	unsigned int offset;
+	bool is_output_comp = !!mtk_mutex_get_output_comp_sof(id);
 
 	WARN_ON(&mtx->mutex[mutex->id] != mutex);
 
-	switch (id) {
-	case DDP_COMPONENT_DSI0:
-	case DDP_COMPONENT_DSI1:
-	case DDP_COMPONENT_DSI2:
-	case DDP_COMPONENT_DSI3:
-	case DDP_COMPONENT_DPI0:
-	case DDP_COMPONENT_DPI1:
-	case DDP_COMPONENT_DP_INTF0:
-	case DDP_COMPONENT_DP_INTF1:
-		writel_relaxed(MUTEX_SOF_SINGLE_MODE,
-			       mtx->regs +
-			       DISP_REG_MUTEX_SOF(mtx->data->mutex_sof_reg,
-						  mutex->id));
-		break;
-	default:
+	if (!is_output_comp) {
 		if (mtx->data->mutex_mod[id] < 32) {
 			offset = DISP_REG_MUTEX_MOD(mtx->data->mutex_mod_reg,
 						    mutex->id);
@@ -948,8 +974,11 @@ void mtk_mutex_remove_comp(struct mtk_mutex *mutex,
 			reg &= ~(1 << (mtx->data->mutex_mod[id] - 32));
 			writel_relaxed(reg, mtx->regs + offset);
 		}
-		break;
 	}
+
+	if (is_output_comp)
+		mtk_mutex_remove_comp_sof(mutex, id);
+
 }
 EXPORT_SYMBOL_GPL(mtk_mutex_remove_comp);
 
diff --git a/include/linux/soc/mediatek/mtk-mutex.h b/include/linux/soc/mediatek/mtk-mutex.h
index 635218e3ac68..515e2d8bfc90 100644
--- a/include/linux/soc/mediatek/mtk-mutex.h
+++ b/include/linux/soc/mediatek/mtk-mutex.h
@@ -69,6 +69,10 @@ enum mtk_mutex_sof_index {
 
 struct mtk_mutex *mtk_mutex_get(struct device *dev);
 int mtk_mutex_prepare(struct mtk_mutex *mutex);
+void mtk_mutex_add_comp_sof(struct mtk_mutex *mutex,
+			    enum mtk_ddp_comp_id id);
+void mtk_mutex_remove_comp_sof(struct mtk_mutex *mutex,
+			       enum mtk_ddp_comp_id id);
 void mtk_mutex_add_comp(struct mtk_mutex *mutex,
 			enum mtk_ddp_comp_id id);
 void mtk_mutex_enable(struct mtk_mutex *mutex);
-- 
2.45.2